Shuttle-checking means for looms.



Nu. 678,32l. Patented July 9, l90l. C. F. ROPEB. SHUTTLE CHECKING MEANS FOR LOOMS.

. (Application filed May 9, 1900.) (No Model.)

UNITED STATES PATENT OFFICE.

CHARLES F. BOPER, OF HOPEDALE, MASSACHUSETTS, ASSIGNOR T O DRAPER COMPANY, OF SAME PLACE AND PORTLAND, MAINE.

SPECIFICATION forming part of Letters Patent No. 678,321, dated July 9, 1901.

Application filed May 9, 1900. Serial No. 16,052. (No model.)

To aZZ whim t it may concern:

Be it known that 1, CHARLES F. ROPER, a citizen of the United States, residing at Hopedale, in the county of Wbrcester and State of Massachusetts, have invented an Improvement in Shuttle-Checking Means for Looms, of which the following description, in connection with the accompanying drawings, is a specification, like letters on the drawings representing like parts.

My present invention relates to means for checking or bringing the shuttle of a loom to rest in the shuttle-box, so that the latter will be in proper position as the lay beats up and ready for the next shot across the lay.

So far as I am aware, the principles involved in the particular embodiment of my invention herein shown and described are broadly novel as applied to the checking of a loom-shuttle at the end of its stroke or throw.

It is well known in mechanics that if a moving body is brought into engagement with a body at rest of substantially the weight of the moving body the latter will be brought to rest at the moment of impact, while the motion is transferred to the body which was at rest, and I make use of this principle in my invention, the momentum of the shuttle being transferred to a movable body, leaving the shuttle at rest.

In the practical embodiment of my invention herein shown and described the shuttle at the end of its flight strikes the pickerstick, which backs up against a movable weight, so proportioned as to take up the momentum of the shuttle, leaving the latter at rest, without rebound or overrunning, while the weight moves back, owing to the momentum imparted to it by the shuttle. Suitable means are provided for limiting the movement thus imparted to the weight.

Figure 1 is a top or plan view of one end of the lay of a loom provided with a shuttlebox,'a picker-stick, and a momentum member. Fig. 2 is a front elevation thereof, and Fig. 3 isan enlarged perspective view detached of the momentum member shown in Figs. 1 and 2.

The lay A, longitudinally slotted at or near the end, as at a, Fig. 1, for the picker-stick P, the front shuttle-box wall B and topplate B, and binder B may be and are all of anyusual or well-known construction, the picker stick being actuated by any suitable means to effect the flight of the shuttle, it being understood that each shuttle-box will be provided with checking means.

Ihave herein shown a momentum-member M, which is preferably made of metal of suitable weight, recessed at its inner face, as at m, to receive the back of the picker-stick, said member M being mounted on pivots an", extended through ears m at the lower end of the member and supported on lugs a secured to the end of the lay, Figs. 1 and 2. A controller is provided to limit the movement of said member M, and herein the controller is shown as an arm 0, fulcrumed on the back of the lay at c, and having a longitudinal slot 0 at or near its free end, Fig. 2, to receive a lateral stud m projecting from the momentum member, the ends of the slot limiting the swinging movement of the said member in both directions. The momentum member in normal position is beyond the picker-stick and adjacent thereto, and when the shuttle in its flight engages the pickerstick the latter is brought against the momentum member, the momentum of the shuttle being transmitted thereto through the intermediate picker-stick, and the mem ber M swings outward, while the shuttle is brought to rest at the proper point. It will be noticed that the member or weight M is fulcrumed so that its center of gravity is be tween the fulcrum 1213 and the inner end of the slot 0 of the controller, so that the'member will normally assume the position shown in Figs. 1 and 2 and will return thereto after the shuttle impact and stoppage.

Tests have shown that it makes no difference whether the shuttle be thick or thin or whether the loom varies in speed, as themementum member will take up the force of the impact of the shuttle, s0 that'the latter is absolutely governed underall conditions. This is a very valuable and important feature, as

one of the greatest difiiculties in loom adjustment is to set the picker-stick so that the shuttle will not rebound or vary in position.

My invention is not restricted to the construction and arrangement herein shown and described, for, so far as I am aware, it is new to provide means for checkingthe shuttle by or through its momentum, wherein the check has an eifective weight at least equal to that of the shuttle, and various changes or modifications of the construction herein shown may be made without departing from the spirit and scope of my invention.

In order that the shuttle-check should bring the shuttle to a standstill at a substantially definite or fixed point in the shuttle-box, the shuttle-check should have an efiective weight at least equal to the weight of the shuttle, so that the latter will neither follow the check after striking it nor rebound. The check is so pivoted that it automatically returns by gravity to its normal position after the lay has passed the filling-changing position-that is to say, after the lay in its traverse has reached the position at which the filling is automatically replenished, this being substantially at the front center in the fillingchanging looms to which the present invention has been applied. Preferably, also, and as shown, the check does not return to its normal position of rest until after the shuttle has been ejected by the picker.

Having described my invention, what I claim as new, and desire to secure by Letters Patent, is-

1. A loom having, in combination, a shuttle-box, a picker, and a momentum shuttlecheck cooperating therewith to stop the shuttle at a substantially definite place in the shuttle-box, the effective weight of said check being at least equal to that of the shuttle.

2. A loom having, in combination, a picker,

- and a movable check arranged to take up the momentum imparted by the shuttle to the picker and to stop the shuttle at a substantially definite place in the shuttle-box, the

elfective weight of said check being at least equal to that of the shuttle.

A loom having, in combination, a shuttle-box, a picker, a momentum shuttle-check which stops the shuttle at a substantially definite place in the shuttle-box, the efiiective weight of said check being at least equal to that of the shuttle, and means to control the check.

4. A loom having, in combination, picking mechanism and means which by or through its momentum stops the shuttle in a substantially definite place.

5. A loom having, in combination, a movable weighted check adapted to take up the momentum and be moved into abnormal position by impact of the shuttle on the picker thereby stopping the shuttle at a substantially definite place, the efitective weight of said checkwbeing at least equal to that of the shuttle, and means to limit such movement.

6. A loom having, in combination, a picker and a weighted swinging momentum-check mounted beyond the picker and normally adjacent thereto, the blow of the shuttle on the picker being transmitted thereby to the check swinging said check and stopping the shuttle in a substantially definite place, the eifective weight of said check being at least equal to that of the shuttle.

7. Shuttle-checking means for looms, comprising a momentum member the effective weight of which is at least equal to that of the shuttle, and an impact member interposed between said momentum member and the shuttle, the momentum of the shuttle being transferred to the momentum member by or through the impact member, leaving the shuttle at rest in a substantially definite place.

8. A loom having, in combination, a shuttle, means to actuate it, and a momentumcheck which stops said shuttle in a substantially definite place, the effective weight of said check being at least equal to that of the shuttle.

9. A loom having, in combination, a picker, a movable check normally adapted to rest adjacent the back thereof, the elfective weight of which is at least equal to that of the shuttle, and means to control the check when moved, the momentum of the shuttle being transmitted through the picker to the check so that the check moves while the shuttle is brought to rest in a substantially definite place.

10. A loom having, in combination, the lay, a picker, a weighted momentum member pivotally mounted on the lay beyond the picker, the effective weight of said momentum member being at least equal to that of the shuttle, and means to govern the movement of said momentum member due to impact of the shuttle upon the picker, the shuttle stopping at a substantially definite place as the result of such impact.

11. A loom having, in combination, the lay, a picker, a check pivotally mounted on the lay beyond and adjacent the picker, the effective weight of said check being at least equal to that of the shuttle, the pivot 01": the check being located eccentric to its center of gravity to cause its return automatically to normal position, and means to limit the movement of said check due to impact of the shuttle upon the picker, the shuttle stopping at a substantially-definite place as the result of the impact.

12. A loom having, in combination, a lay, a shuttle, and a check which is moved away from its normal position by the impact of the incoming shuttle and which returns automatically to said position after the lay has passed the front center.

13. A loom having, in combination, a lay,

a shuttle, and a momentum-check, the effective weight of which is at least equal to that of the shuttle, said check moving away from itsnormal position under the impact of the incoming shuttle, and returning automatically to said position after the lay has passed the front center.

In testimony whereof I have signed my name to this specification in the presence of two subscribing Witnesses.

CHARLES F. ROPEB.

Witnesses:

GEORGE OTIS DRAPER, ERNEST W. WOOD. 

